If you want to make some button with corner radius like this:
1.Create a drawable xml file.
<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android">
<item>
<shape android:shape="rectangle">
<solid android:color="#FF5E3A"/>
<corners android:radius="10dp"/>
</shape>
</item>
</selector>
2.Set this drawable as your button's background.
<Button
android:text="CLICK"
android:background="@drawable/orange_corner_radius_bg"
android:textColor="#ffffff"
android:layout_width="match_parent"
android:layout_height="40dp" />